I some cases we have dozens of delivery orders waiting for inventory and assigned 
to warehouse A (so source location is A/Stock). How can I fulfill these from warehouse B
that does have stock. The Source Location field of the delivery order is read-only.

Ideally I'd like a way to select 50 orders and change them all to a new Source Location
so I can fulfill them out of a different warehouse.

Any suggestions or add-on app to do this ??